Photoset

spring-of-mathematics:

Mathematically Correct Breakfast - How to Slice a Bagel into Two Linked Halves. If a torus is cut by a Möbius strip it will split up into to interlocking rings.

It is not hard to cut a bagel into two equal halves which are linked like two links of a chain. Figure 1:

  1. To start, you must visualize four key points.  Center the bagel at the origin, circling the Z axis. A is the highest point above the +X axis.  B is where the +Y axis enters the bagel. C is the lowest point below the -X axis.  D is where the -Y axis exits the bagel.
  2. These sharpie markings on the bagel are just to help visualize the geometry and the points.  You don’t need to actually write on the bagel to cut it properly.
  3. The line ABCDA, which goes smoothly through all four key points, is the cut line.  As it goes 360 degrees around the Z axis, it also goes 360 degrees around the bagel.
  4. The red line is like the black line but is rotated 180 degrees (around Z or through the hole). An ideal knife could enter on the black line and come out exactly opposite, on the red line. But in practice, it is easier to cut in halfway on both the black line and the red line. The cutting surface is a two-twist Mobius strip; it has two sides, one for each half.
  5. After being cut, the two halves can be moved but are still linked together, each passing through the hole of the other.

It is much more fun to put cream cheese on these bagels than on an ordinary bagel. In additional to the intellectual stimulation, you get more cream cheese, because there is slightly more surface area.
Topology problem: Modify the cut so the cutting surface is a one-twist Mobius strip. (You can still get cream cheese into the cut, but it doesn’t separate into two parts). See more at: Mathematically Correct Breakfast: How to Slice a Bagel into Two Linked Halves by George W. Hart.

Images: How to Slice a Bagel into Two Linked Halves by George W. Hart - Cutting bagels into linked halves on Mathematica. - Interlocking Bagel Rings

Maybe, that’s one of the reasons why I love bagel :)

Photoset

the-treble:

I figured most of my Facebook friends would miss out on some of Martin Luther King, Jr’s quotes that are less palatable for complacent America. So I made some aggressive and hard-to-ignore photos to bomb their feed with for today.

Quote
"

Olivia, my eldest daughter, caught measles when she was seven years old. As the illness took its usual course I can remember reading to her often in bed and not feeling particularly alarmed about it. Then one morning, when she was well on the road to recovery, I was sitting on her bed showing her how to fashion little animals out of coloured pipe-cleaners, and when it came to her turn to make one herself, I noticed that her fingers and her mind were not working together and she couldn’t do anything.

“Are you feeling all right?” I asked her.

“I feel all sleepy, ” she said.

In an hour, she was unconscious. In twelve hours she was dead.

The measles had turned into a terrible thing called measles encephalitis and there was nothing the doctors could do to save her.

That was twenty-four years ago in 1962, but even now, if a child with measles happens to develop the same deadly reaction from measles as Olivia did, there would still be nothing the doctors could do to help her.

On the other hand, there is today something that parents can do to make sure that this sort of tragedy does not happen to a child of theirs. They can insist that their child is immunised against measles. I was unable to do that for Olivia in 1962 because in those days a reliable measles vaccine had not been discovered. Today a good and safe vaccine is available to every family and all you have to do is to ask your doctor to administer it.

It is not yet generally accepted that measles can be a dangerous illness.

Believe me, it is. In my opinion parents who now refuse to have their children immunised are putting the lives of those children at risk.

In America, where measles immunisation is compulsory, measles like smallpox, has been virtually wiped out.

Here in Britain, because so many parents refuse, either out of obstinacy or ignorance or fear, to allow their children to be immunised, we still have a hundred thousand cases of measles every year.

Out of those, more than 10,000 will suffer side effects of one kind or another.

At least 10,000 will develop ear or chest infections.

About 20 will die.

LET THAT SINK IN.

Every year around 20 children will die in Britain from measles.

So what about the risks that your children will run from being immunised?

They are almost non-existent. Listen to this. In a district of around 300,000 people, there will be only one child every 250 years who will develop serious side effects from measles immunisation! That is about a million to one chance. I should think there would be more chance of your child choking to death on a chocolate bar than of becoming seriously ill from a measles immunisation.

So what on earth are you worrying about?

It really is almost a crime to allow your child to go unimmunised.

"

Roald Dahl, 1986

(via brain-confetti)

TEAM VACCINE

(via watchoutfordinosaurs)

NINETEEN EIGHTY SIX.

roald dahl was calling out the anti-vaccination movement as self indulgent bullshit //thirty god damn years ago//.

(via ultralaser)

Over 1,000 preventable deaths and 128,000 preventable illnesses since 2007 and counting

And this is only in recent history. I can’t imagine the numbers if we had data all the way back to 1986.

(via autistiel)

(via heinastuff)

Tags: vaccination
Photo
confusedcatsagainstfeminism:

Photo of Dusty the cat, looking suspicious, sent in by Amanda Marcotte of Pandagon. 

-
Confused Cats Against Feminism is a project of We Hunted the Mammoth.

confusedcatsagainstfeminism:

Photo of Dusty the cat, looking suspicious, sent in by Amanda Marcotte of Pandagon.

-

Confused Cats Against Feminism is a project of We Hunted the Mammoth.

Text

Anonymous said: How can we promote healing if all we're supposed to say to racists is "fuck you"? I'm pissed at them too, but that just doesn't seem very productive.

yoisthisracist:

Hey ding dong, by telling racists “fuck you,” you let them know that their racist behavior and speech aren’t fucking welcome around people who aren’t, you know, completely pieces of shit. Treating those people like their racism is somehow a reasonable, debatable viewpoint prevents healing in the people who are actually affected by their bullshit.

Text

Anonymous said: According to recent reports from the Labor Department, raising the minimum wage actually cuts unemployment and spurs job growth faster? Wow, it's almost as if conservative economic policies are really completely useless garbage and utter mendacity.

yoisthisracist:

That’s always been completely self-evident.

Text

Anonymous said: Will "devil's advocate" ever not mean "racist contrarian?"

yoisthisracist:

Sometimes it means “sexist fuckface”, I guess.

I’m always saying “the devil” has enough advocates already, you don’t have to pretend.

Photo
epitomeofraw:

THIS IS FUCKING FANTASTIC.

epitomeofraw:

THIS IS FUCKING FANTASTIC.

(Source: textsfromsuperheroes.com, via wilwheaton)

Tags: iron man thor
Text

Anonymous said: Yo, Marvel comics just announced that the new Captain America is gonna be black and Thor is going to be a woman. As you can imagine the response was wholly sympathetic and there have been no sexist or racists responses to this.

yoisthisracist:

Huh. I would have expected the exact fucking opposite.

Text

marathemara:

iizanimeaddict:

My dad just came into my room and shouted at me in Klingon.

Am I more embarrassed that he did that or that I know he said I was a disappointment to the empire?

You should be most embarrassed that you’re a disappointment to the empire.

(via wilwheaton)

Photoset

hoganddice:

onlylolgifs:

Realistic Historical Sword Fighting

Shoutout to the fuckwits who think longswords were all about random hacking and slashing.

(via magusworkshop)

Tags: long sword
Photoset
Photoset

asylum-art:

Art Focus: Adam Lupton

For this edition of our Art Focus feature, we present to you the work of Canadian artist Adam Lupton. Painted in oils, his portraiture oftentimes features multiple visages blurred together in a fragmented reality that seems to reflect the different struggles his subjects have with identity. Examples of this include different glimpses of a man dressing in drag and snapshots of another person putting on different masks


(via magusworkshop)

Photo
femfreq:

Take a look at this cosplay from GaymerX. These are the women from Ubisoft’s Assassin’s Creed that are too hard to animate. 

femfreq:

Take a look at this cosplay from GaymerX. These are the women from Ubisoft’s Assassin’s Creed that are too hard to animate. 

(via magusworkshop)

Photo
absent-blogger:

drinkmasturbatecry:

nudityandnerdery:

the-fandoms-are-valentines:

grandtheftautosanandreas:

Douglas Adams is the best when it comes to describe characters

they need to teach classes on Douglas Adams analogies okay
“He leant tensely against the corridor wall and frowned like a man trying to unbend a corkscrew by telekinesis.”
"Stones, then rocks, then boulders which pranced past him like clumsy puppies, only much, much bigger, much, much harder and heavier, and almost infinitely more likely to kill you if they fell on you.”
"He gazed keenly into the distance and looked as if he would quite like the wind to blow his hair back dramatically at that point, but the wind was busy fooling around with some leaves a little way off.”
"It looked only partly like a spaceship with guidance fins, rocket engines and escape hatches and so on, and a great deal like a small upended Italian bistro.”
"If it was an emotion, it was a totally emotionless one. It was hatred, implacable hatred. It was cold, not like ice is cold, but like a wall is cold. It was impersonal, not as a randomly flung fist in a crowd is impersonal, but like a computer-issued parking summons is impersonal. And it was deadly - again, not like a bullet or a knife is deadly, but like a brick wall across a motorway is deadly.”

And, of course: "The ships hung in the sky in much the same way that bricks don’t."

the one that will always stay with me is “Arthur Dent was grappling with his consciousness the way one grapples with a lost bar of soap in the bath,” i feel like that was the first time i really understood what you could do with words.


And yet people are still confused by the fact that I got a Hitchhiker’s tattoo.

absent-blogger:

drinkmasturbatecry:

nudityandnerdery:

the-fandoms-are-valentines:

grandtheftautosanandreas:

Douglas Adams is the best when it comes to describe characters

they need to teach classes on Douglas Adams analogies okay

He leant tensely against the corridor wall and frowned like a man trying to unbend a corkscrew by telekinesis.”

"Stones, then rocks, then boulders which pranced past him like clumsy puppies, only much, much bigger, much, much harder and heavier, and almost infinitely more likely to kill you if they fell on you.”

"He gazed keenly into the distance and looked as if he would quite like the wind to blow his hair back dramatically at that point, but the wind was busy fooling around with some leaves a little way off.”

"It looked only partly like a spaceship with guidance fins, rocket engines and escape hatches and so on, and a great deal like a small upended Italian bistro.”

"If it was an emotion, it was a totally emotionless one. It was hatred, implacable hatred. It was cold, not like ice is cold, but like a wall is cold. It was impersonal, not as a randomly flung fist in a crowd is impersonal, but like a computer-issued parking summons is impersonal. And it was deadly - again, not like a bullet or a knife is deadly, but like a brick wall across a motorway is deadly.”

And, of course:

"The ships hung in the sky in much the same way that bricks don’t."

the one that will always stay with me is “Arthur Dent was grappling with his consciousness the way one grapples with a lost bar of soap in the bath,” i feel like that was the first time i really understood what you could do with words.

And yet people are still confused by the fact that I got a Hitchhiker’s tattoo.

(Source: kimkangaskhan, via magusworkshop)